kc3-lang/angle/src/common/utilities.h

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• Hash : 3edfe034
  Author :
  Date : 2015-09-04T16:38:24
  

  Support primitive restart in RendererGL.
  
  Store index ranges in a new struct that tracks how many real indices were
  seen.  Update index caching to key on primitive restart being enabled and
  update index counting functions to skip primitive restart indicies when
  needed.
  
  Passes dEQP-GLES3.functional.primitive_restart.*
  
  Change-Id: Id1e25a5adcdcd4e998836e8ff6679c64be4c3066
  Reviewed-on: https://chromium-review.googlesource.com/297770
  Tryjob-Request: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Tested-by: Geoff Lang <geofflang@chromium.org>
  

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• src/common/utilities.h

• //
  // Copyright (c) 2002-2013 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  // utilities.h: Conversion functions and other utility routines.
  
  #ifndef COMMON_UTILITIES_H_
  #define COMMON_UTILITIES_H_
  
  #include <EGL/egl.h>
  #include <EGL/eglext.h>
  
  #include "angle_gl.h"
  #include <string>
  #include <math.h>
  
  #include "common/mathutil.h"
  
  namespace gl
  {
  
  int VariableComponentCount(GLenum type);
  GLenum VariableComponentType(GLenum type);
  size_t VariableComponentSize(GLenum type);
  size_t VariableInternalSize(GLenum type);
  size_t VariableExternalSize(GLenum type);
  GLenum VariableBoolVectorType(GLenum type);
  int VariableRowCount(GLenum type);
  int VariableColumnCount(GLenum type);
  bool IsSamplerType(GLenum type);
  GLenum SamplerTypeToTextureType(GLenum samplerType);
  bool IsMatrixType(GLenum type);
  GLenum TransposeMatrixType(GLenum type);
  int VariableRegisterCount(GLenum type);
  int MatrixRegisterCount(GLenum type, bool isRowMajorMatrix);
  int MatrixComponentCount(GLenum type, bool isRowMajorMatrix);
  int VariableSortOrder(GLenum type);
  
  int AllocateFirstFreeBits(unsigned int *bits, unsigned int allocationSize, unsigned int bitsSize);
  
  static const GLenum FirstCubeMapTextureTarget = GL_TEXTURE_CUBE_MAP_POSITIVE_X;
  static const GLenum LastCubeMapTextureTarget = GL_TEXTURE_CUBE_MAP_NEGATIVE_Z;
  bool IsCubeMapTextureTarget(GLenum target);
  size_t CubeMapTextureTargetToLayerIndex(GLenum target);
  GLenum LayerIndexToCubeMapTextureTarget(size_t index);
  
  // Parse the base uniform name and array index.  Returns the base name of the uniform. outSubscript is
  // set to GL_INVALID_INDEX if the provided name is not an array or the array index is invalid.
  std::string ParseUniformName(const std::string &name, size_t *outSubscript);
  
  // Find the range of index values in the provided indices pointer.  Primitive restart indices are
  // only counted in the range if primitive restart is disabled.
  IndexRange ComputeIndexRange(GLenum indexType,
                               const GLvoid *indices,
                               size_t count,
                               bool primitiveRestartEnabled);
  
  // Get the primitive restart index value for the given index type.
  GLuint GetPrimitiveRestartIndex(GLenum indexType);
  
  bool IsTriangleMode(GLenum drawMode);
  
  // [OpenGL ES 3.0.2] Section 2.3.1 page 14
  // Data Conversion For State-Setting Commands
  // Floating-point values are rounded to the nearest integer, instead of truncated, as done by static_cast.
  template <typename outT> outT iround(GLfloat value) { return static_cast<outT>(value > 0.0f ? floor(value + 0.5f) : ceil(value - 0.5f)); }
  template <typename outT> outT uiround(GLfloat value) { return static_cast<outT>(value + 0.5f); }
  
  }
  
  namespace egl
  {
  static const EGLenum FirstCubeMapTextureTarget = EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR;
  static const EGLenum LastCubeMapTextureTarget = EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR;
  bool IsCubeMapTextureTarget(EGLenum target);
  size_t CubeMapTextureTargetToLayerIndex(EGLenum target);
  EGLenum LayerIndexToCubeMapTextureTarget(size_t index);
  bool IsTextureTarget(EGLenum target);
  bool IsRenderbufferTarget(EGLenum target);
  }
  
  namespace egl_gl
  {
  GLenum EGLCubeMapTargetToGLCubeMapTarget(EGLenum eglTarget);
  GLenum EGLImageTargetToGLTextureTarget(EGLenum eglTarget);
  GLuint EGLClientBufferToGLObjectHandle(EGLClientBuffer buffer);
  }
  
  #if !defined(ANGLE_ENABLE_WINDOWS_STORE)
  std::string getTempPath();
  void writeFile(const char* path, const void* data, size_t size);
  #endif
  
  #if defined (ANGLE_PLATFORM_WINDOWS)
  void ScheduleYield();
  #endif
  
  #endif  // COMMON_UTILITIES_H_
  

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